Free beta · Your health, on one timeline
UnDun shows which way your health is heading, and what has moved since you changed something. Your wearable, blood tests and a two-minute monthly check-in, read together and compared with you.
Today you start with a wearable. Its history means your first report arrives the day you join. Joining without one is coming.
November read · sampleFunctional pace
Improved from your baseline. Heart and sleep improved 3.1% on your starting point.
Blood tests show a direction, never good or bad. Sample numbers for an invented person.
A supplement, a new training block, an earlier bedtime, less alcohol. Tell us what you changed and when. UnDun compares the weeks after with the weeks before, compared with your own normal ups and downs, and tells you what moved, or that it’s too soon to say.
You choose the change; we measure it. Eight weeks after compared with eight weeks before, across your measures, compared with your own normal swing. Some apps link a daily habit to the next morning’s score; this looks at a change you keep up for weeks.
No score every morning. A change shows only when it’s bigger than your usual swing, with how sure we are. Otherwise: not clear yet.
When your blood tests or a body scan move the same way as your wearable, confidence goes up. Your record carries on when you change device or lab.
Each measure shows where you started, where you are now, and your usual range, so you can see for yourself how far it has moved.
What you changed · sample
More zone 2 training
+ Improved from your baseline
Resting heart rate down 3 bpm · heart rate variability up 6 ms
Both beyond your usual range.
Magnesium at night
= Holding steady
No clear change yet
Within your usual range: changes this size happen on their own.
Shaded: your usual range. Improved: moved beyond your usual range in the direction set for that measure, such as a lower resting heart rate. Sample numbers for an invented person; an association, not proof.
Opening to beta members Guided trials: pick a change from a reviewed list, and we set the before and after for you.
Wearable apps, blood test add-ons and longevity clinics each do part of this well, and a good clinic does what no app can: examines you, orders the right tests and treats you. UnDun answers one question, what has moved since you changed something, and it fits alongside the care you already have.
Already with a clinic? Bring UnDun along: your record between visits, ready to share with your clinician, with a methods report on request.
Categories, not any one company, and each does things we don’t. Checked in November 2026 on the products’ own pages; features change.
Some people want one line a month. Others want every reading and how sure we are about it. Your report opens simple, and the detail is there when you want it.
At a glance
The one thing to know
Heart and sleep improved 3.1% on your starting point.
The one thing to do
Keep doing what you’re doing.
One thing to know and one thing to do. Ten seconds on the 1st of the month.
Your highlights
Functional pace+1.8% a year
MovementHolding steady
LDL cholesterol3.8 → 3.0
Thinking speed45, usual 42
Each area and each blood test compared with your own history, with what moved and what held.
Every detail
Resting heart rate, Sep56 bpm
Usual range55–60
Days of data541
ConfidenceHigh
Month by month: your baseline, your usual range, where you are now, and how sure we are. One tap away.
Coming Pick the one thing you care about most, set a goal, and your monthly read leads with it.
Everything goes on one timeline and is compared with your own history, so a change you make can be read across all of it.
How you move, recover and sleep, rolled into one figure: how fast your capacity is changing each year. As you get older, holding level is a good result.
We don’t give you a “body age”. That compares you with other people; this compares you with you.
Pick one change, like an earlier bedtime or two more runs a week, and keep it up for a few weeks. We measure what moved after you started.
This is what n-of-1 means: a study with one person in it.
Your results sit on the same timeline as everything else, each one next to your own earlier tests rather than a range built from strangers.
Any lab. Soon you’ll be able to upload the report instead of typing it in.
Two minutes of shape matching, a reaction test and the WHO-5 wellbeing questions. Your wearable can’t measure any of these.
The first one is practice and isn’t counted.
Supplements and peptides by name, medication by type, and changes like a new training block, Zone 2 or an earlier bedtime, with when you started and stopped. Then you can see what moved after.
A quick check once a month, not a daily log.
Apple Watch, Fitbit, Oura or Ultrahuman. Years of history from the export your phone already has, and it carries on if you change device.
We read daily totals and look at the trend over months.
UnDun is organized around the World Health Organization’s idea of intrinsic capacity: the physical and mental capacities people keep as they age. We read four of its areas: movement, vitality, cognition and wellbeing.
Everyone’s numbers bounce around. We measure how much yours usually move before we call anything a change, so one bad week isn’t read as a decline.
Each number sits next to your own starting point and usual range. If there isn’t enough data yet, the report says “not clear yet” rather than guessing.
We don’t do daily scores or daily nudges. Your report looks at months and years, which is the part your wearable app leaves out.
If a result is worth a closer look, the report suggests you ask your doctor and gives you the numbers to take with you.
Organized around the WHO’s ICOPE guidance on integrated care for older people.
A few taps on your phone gets your wearable’s history. We send you the steps for your device.
Apple: minutes. Fitbit: about a day.Read the consent form, upload the file, and enter your blood results.
About 10 minutesWe work out what’s normal for you and show which way each area is moving.
Straight awayA two-minute check-in, a fresh export, and any new tests. Each month makes the picture clearer.
We email you on the 1stA clinic visit sees one blood draw and a short history. A wearable has been recording every day in between. UnDun reads those months for the people who make decisions with them.
In development
Open now for pilot studies
For clinicians and researchers: how each measure is calculated, how a baseline and usual range are set, the thresholds and confidence levels, the sources for blood test variation, how the check-in is scored, and what is assumed rather than verified.
Ask us at contact@undun.com
UnDun is not a medical device. It does not diagnose, treat or replace clinical assessment, and its measures are not yet clinically validated. Data reaches a clinician or a study only with the person’s explicit consent, and they can withdraw it at any time. Talk to us: contact@undun.com
Nothing during the beta. We’ll tell you well before that changes, and you can leave at any time.
We can show whether your measures moved beyond your usual range after you started it, compared with the eight weeks before. That’s an association, not proof: other things change too, and we say so. Today it’s measured from your wearable; blood tests and check-ins join as they build up.
For now, yes. Your record starts from your wearable’s history, then your blood tests, check-ins and what you’re trying join it. A version for people without a wearable is coming, built from blood tests and check-ins.
Whatever you have. Most wearables already hold months of history, so your first report arrives the day you join. New to your wearable? Join anyway; your report grows with you.
Daily totals: steps, activity, sleep, heart rate and its variability, blood oxygen. Never your location, heart rhythm recordings, or anything you’ve typed into your device’s app.
No. UnDun shows how your own measures are changing. It doesn’t diagnose anything. When a result is worth a closer look, it suggests you ask your doctor and gives you the numbers to take.
Any time, from your own link. We delete what you sent.
Your health is a long game. Play it with real data. If you have a wearable, you can start today.
Join the beta